EP 1262509 A4 20030806 - IMIDE-BENZOXAZOLE POLYCONDENSATE AND PROCESS FOR PRODUCING THE SAME
Title (en)
IMIDE-BENZOXAZOLE POLYCONDENSATE AND PROCESS FOR PRODUCING THE SAME
Title (de)
IMID-BENZOXAZOLPOLYKONDENSAT SOWIE VERFAHREN ZUR HERSTELLUNG
Title (fr)
POLYCONDENSAT D'IMIDE-BENZOXAZOLE ET PROCEDE DE PRODUCTION DE CELUI-CI
Publication
Application
Priority
- JP 0007840 W 20001108
- JP 35637399 A 19991110
Abstract (en)
[origin: EP1262509A1] A polyimide-based polycondensate which may be used as an insulation film by coating a copper foil with the polycondensate and by heating the coated copper foil, which insulation film does not warp the foil, as well as a production process thereof, is disclosed. The polycondensate according to the invention is a solvent-soluble polycondensate containing a benzoxazole component having a carboxylic group and an imide component having a phenolic hydroxyl group, which is obtained by dehydration-condensing one or more tetracarboxylic dianhydrides with one or more aromatic diamines having an amino group and a phenolic hydroxyl group, the amino group and the phenolic hydroxyl group being located at ortho positions with respect to each other, by heating the one or more tetracarboxylic dianhydrides and the one or more aromatic diamines at 150 DEG C to 220 DEG C in the presence of an acid catalyst.
IPC 1-7
IPC 8 full level
C08G 73/22 (2006.01); G03F 7/023 (2006.01); G03F 7/039 (2006.01); H05K 1/03 (2006.01)
CPC (source: EP US)
C08G 73/22 (2013.01 - EP US); G03F 7/0233 (2013.01 - EP US); G03F 7/039 (2013.01 - EP US); H05K 1/0346 (2013.01 - EP US); Y10T 428/24802 (2015.01 - EP US); Y10T 428/24917 (2015.01 - EP US); Y10T 428/31681 (2015.04 - EP US)
Citation (search report)
- [X] EP 0387062 A2 19900912 - HOECHST CELANESE CORP [US]
- [A] US 5919892 A 19990706 - HWANG WEN-FANG [US], et al
- [A] US 4087409 A 19780502 - PRESTON JACK
- [A] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 13 30 November 1999 (1999-11-30)
- See references of WO 0134679A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1262509 A1 20021204; EP 1262509 A4 20030806; EP 1262509 B1 20070110; DE 60032943 D1 20070222; DE 60032943 T2 20071025; JP 4969751 B2 20120704; US 6890626 B1 20050510; WO 0134679 A1 20010517
DOCDB simple family (application)
EP 00974822 A 20001108; DE 60032943 T 20001108; JP 0007840 W 20001108; JP 2001537388 A 20001108; US 12984402 A 20020923